Open AccessDiscovery of pulsations in the Am star HD 13079
Author(s) -
Martinez Peter,
Kurtz D. W.,
Ashoka B. N.,
Chaubey U. S.,
Gupta S. K.,
Leone F.,
Catanzaro G.,
Sagar R.,
Raj E.,
Seetha S.,
Kasturirangan K.
Publication year - 1999
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.1999.02896.x
Subject(s) - physics , astrophysics , astronomy , star (game theory)
Pulsation in cool main‐sequence Am stars is a rare phenomenon observed in a few marginal Am stars and only one classical Am star. The chemically peculiar star HD 13079 is shown to be pulsating with a 78‐min period and a peak‐to‐peak B amplitude of 0.02 mag. The Hipparcos parallax, uvbyβ photometry and pulsations together suggest that HD 13079 is an Am star near the zero‐age main sequence, and that it is a fundamental‐mode pulsator on the red edge of the instability strip.